Question

－Susan, would you like to go hiking with us this afternoon?

－I'd love to, but I _________ study for a test．

[　　]

A．

may

B．

have to

C．

can

Answer 1

答案：B
解析：

情态动词的考查。May意为“可以”；can意为“能够”，have to意为“不得不”，根据句意可知“我不得不为考试而学习”。